linux-kernel - Re: [PATCH] ACPI / memhotplug: Fix a stale pointer in error path

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <3723604.ey6eovWnzB@vostro.rjw.lan>
Date:	Fri, 12 Jul 2013 22:42:33 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Toshi Kani <toshi.kani@...com>
Cc:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ACPI / memhotplug: Fix a stale pointer in error path

On Friday, July 12, 2013 08:51:29 AM Toshi Kani wrote:
> On Fri, 2013-07-12 at 09:24 +0900, Yasuaki Ishimatsu wrote:
> > (2013/07/11 1:47), Toshi Kani wrote:
> > > device->driver_data needs to be cleared when releasing its data,
> > > mem_device, in an error path of acpi_memory_device_add().
> > > 
> > > Signed-off-by: Toshi Kani <toshi.kani@...com>
> > > ---
> > 
> > Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
> 
> Thanks Yasuaki!

Queued up as a fix for 3.11.

Do we need that in -stable as well?

Rafael


> > 
> > >   drivers/acpi/acpi_memhotplug.c |    1 +
> > >   1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
> > > index c711d11..999adb5 100644
> > > --- a/drivers/acpi/acpi_memhotplug.c
> > > +++ b/drivers/acpi/acpi_memhotplug.c
> > > @@ -323,6 +323,7 @@ static int acpi_memory_device_add(struct acpi_device *device,
> > >   	/* Get the range from the _CRS */
> > >   	result = acpi_memory_get_device_resources(mem_device);
> > >   	if (result) {
> > > +		device->driver_data = NULL;
> > >   		kfree(mem_device);
> > >   		return result;
> > >   	}
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> > > the body of a message to majordomo@...r.kernel.org
> > > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > > 
> > 
> > 
> 
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/